#all{
    width: 100%;
    height: 100vh;
    /* 控制高度！！！！！！！！ */
    /* background-color: bisque; */
    min-height: 600px;
    background-color: lemonchiffon;
}
#core{
    width: 100%;
    min-width: 1000px;
    height: auto;
    background-color: lemonchiffon;
    padding-top: 80px;
    padding-bottom: 80px;
    display: flex;
    align-items: center;
    justify-content: center;

}
#main{
    width: 90%;
    border-radius: 20px;
    border: 1px dashed black;
    background-color: #dddddd;
}
#main_t{
    padding-top: 20px;
    height: 600px;
    width: 100%;
}
#his{
    height: 98%;
    width: 90%;
    margin: 0 auto;
    background-color: #dddddd;
}
#userchatBox {
    float: left;
    width: 45%;
    height: 95%;
    border: 1px solid #ccc;
    padding: 10px;
    overflow-y: scroll;
    margin-bottom: 10px;
    background-color: white;
}
#aichatBox {
    float: right;
    width: 45%;
    height: 95%;
    border: 1px solid #ccc;
    padding: 10px;
    overflow-y: scroll;
    margin-bottom: 10px;
    background-color: white;
}
#main_b{
    margin: 0 auto;
    width: 100%;
    height: 40px;
    padding-bottom: 10px;
}
#chatInput {
    float: left;
    width: 80%;
    padding: 10px;
    margin-left: 5%;
}
#chatSend {
    float: right;
    width: 10%;
    padding: 9px;
    margin-right: 2%;
}